Guide block for rack



FIG. 1 is a front perspective view of a guide block for rack showing mynew design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a rear perspective view thereof.

The broken lines in the drawings illustrate portions of the guide blockfor rack which form no part of the claimed design.

CLAIM The ornamental design for a guide block for rack, as shown anddescribed.